package com.situ.personal.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;

@WebFilter(filterName = "encodingFilter", urlPatterns = {"/*"})
public class EncodingFilter implements Filter{

	@Override
	public void init(FilterConfig filterConfig) throws ServletException {
	}

	@Override
	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
			throws IOException, ServletException {
		//System.out.println("EncodingFilter.doFilter() before");
		//处理POST乱码问题  表单里面：method="get"  method="post"
		HttpServletRequest httpServletRequest = (HttpServletRequest) request;
		String method = httpServletRequest.getMethod();
		if ("post".equalsIgnoreCase(method)) {
			request.setCharacterEncoding("UTF-8");
		}
		
		// 执行下一个过滤器，如果没有过滤器就访问要访问的Servlet
		chain.doFilter(request, response);
		
		//System.out.println("EncodingFilter.doFilter() after");
	}

	@Override
	public void destroy() {
	}

}
